See more from Britain's Got Talent at http://itv.com/talent
Amanda's Golden Buzzer act transformed into little rockstars before our very eyes!
Watch Chapter 13 perform 'Own this town', an original song written by the boys and McFly's Tom Fletcher.
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Teenage Rockers Chapter 13 ROCK The BGT Stage | Semi-Finals | BGT 2019 ─ Britain's Got Talent
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